摘要
用色度学方法计算以指数方程变换RGB三原色阶调前后的颜色参数,可知颜色空间中绝大部分颜色变换后饱和度C*增加,同时亮度L*降低,约20万种纯彩色的饱和度和亮度降低,且颜色色相非线性改变。这对于彩色数字图像印刷复制会产生不利影响。本论文以印刷实验测量数据证实了计算数据分析结论的可信性。
The color parameter that calculated by colormetry method from RGB tricolor tone that is transformed from exponential equation, describing a fact that the most of color perceptive saturation C＊ is increased but color perceptive brightness L＊ is reduced in color space after the tone was transformed, about two hundred thousand kinds of pure color C＊ and L＊ are reduced simultaneously, with non-linear changes in color hue, which can have an adverse impact on color digital photo printing. The credibility of calculation data analysis conclusion is confirmed by printing experimental measure data.
出处
《中国印刷与包装研究》
CAS
2009年第3期31-37,共7页
China Printing Materials Market
关键词
色度学
阶调变换
阶调复制曲线
Colormetry
Tone transformation
Tone reproduction curve
